Optical Unit Shake Correction Filter Switching Mechanism
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Solution Overview
Problem
Optical units with shake correction functions face challenges in reducing size and power consumption, particularly due to the incorporation of filter switching mechanisms that increase weight and complexity, making it difficult to balance weight and adjust the center of gravity, thereby affecting torque requirements and power consumption.
Innovation Solution
The optical unit incorporates a filter switching mechanism at the subject side of the optical element, overlapping with the shake correction drive mechanism, allowing for reduced size and weight by setting the center of gravity closer to the oscillation center, and uses a magnetic drive mechanism and flexible wiring boards to minimize power consumption and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a filter switching mechanism is incorporated in the optical path, then the optical unit can perform day and night photography by switching filters, but the weight of the optical module increases, making movement control and weight balance adjustment difficult
Solution Approach 1:
The filter switching mechanism is integrated into the optical module structure, merging the filter switching function with the existing optical components. This consolidation allows the filter switching mechanism to share space with other components, reducing overall weight while maintaining the day and night photography capability through infrared cut filter switching.
2Adaptability or versatility
If a filter switching mechanism is incorporated in the optical path, then the optical unit can switch filters for different lighting conditions, but the size of the optical unit increases
Solution Approach 1:
The filter switching mechanism is nested within the existing optical module structure, utilizing available spaces between other optical components. This nesting approach allows the filter switching function to be incorporated without significantly increasing the overall size of the optical unit, as the mechanism shares space with existing structures.
3Adaptability or versatility
If the weight of the optical module increases due to filter switching mechanism, then the optical unit can provide additional functionality, but the power consumption of the shake correction mechanism increases
Solution Approach 1:
The filter switching mechanism is merged with the shake correction mechanism structure, allowing both functions to share common structural elements and support systems. This integration minimizes the additional weight penalty and reduces the impact on power consumption by utilizing existing structural support and mounting points.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the size and power consumption of the optical unit while maintaining effective shake correction and enabling day and night photography by switching filters, thereby improving image quality and reducing operational power usage.
Implementation Method 1
a magnetic drive mechanism having a magnet and a coil for applying an electromagnetic force in a magnetic field of the magnet
Data Source
AI summary
The disclosure reduces the size of an optical unit with a shake correction function provided with a filter switching function and reduces the power consumption. An optical unit with a shake correction function includes a fixed body; a movable body having an optical element; an oscillation support mechanism configured to oscillatably support the movable body with respect to the fixed body; and a shake correction drive mechanism configured to oscillate the movable body, such that the movable body includes a filter and a filter switching mechanism configured to switch the presence or absence of the filter, and the oscillation support mechanism is arranged at a position overlapping the shake correction drive mechanism when seen from a direction perpendicular to a direction of an optical axis of the optical element, and the filter and the filter switching mechanism are arranged at a subject side of the optical element.